Mold Removal Cost And Risk In ZIP 99359 WA

A typical professional mold job in ZIP 99359 runs about $1,450 to $5,850 before rebuild. Half the homes here were built before 1955, newer than the Columbia County median of 1948.

1955Median year homes were built

71%Homes built before 1980

21%Homes rented, not owned

$132,500Median home value

$1,583Median gross rent

80Housing units

Neighborhood figures for ZIP Code Tabulation Area 99359 from Census ACS 2019 to 2023.

71 percent of homes in 99359 went up before 1980. Older plumbing, roofs and window seals are where slow leaks start, and slow leaks are the mold most home policies leave out.

About 21 percent of homes here are rented, against 22 percent across Columbia County, so most households carry an owner's policy on the building.

The top of a typical mold job here, $5,850, is about 4.4 percent of the median home value of $132,500.

Typical Prices In 99359

JobSizeNational Range99359 Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,450 to $5,850
Mold Remediationan attic$2,000 to $7,500$1,950 to $7,300
Mold Inspection and Testinga visual inspection$200 to $600$200 to $600
Mold Inspection and Testingan inspection with samples$300 to $1,000$300 to $950
Mold Inspection and Testinga clearance test$300 to $800$300 to $800

Estimate is the national range times 97.4 divided by 100, the price level for the nonmetro part of Washington, rounded to $50. National ranges from Remediational cost guide, price level from BEA Regional Price Parities 2024.

The standard limited fungi endorsement caps mold at $5,000. Against a typical job here of up to $5,850, that cap falls short by about $850 at the top of that range. Read the form

Water Hazards FEMA Rates For Columbia County

FEMA rates none of the water hazards below as high for Columbia County.

HazardFEMA Risk Rating
Inland floodingVery Low
Coastal floodingNot Applicable
HurricaneNot Applicable
Cold waveVery Low
Winter weatherVery Low

Source FEMA National Risk Index, December 2025, county level.

Washington Rules On Mold

Nearby ZIP Codes In Columbia County

Part of Columbia County, Washington.

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99359, WA Area

Columbia County